Bidwell Park and Playground Commission meetings, Nov. 27, 2000, May 30, 2005
| Year | Material | Amount | Use |
| 1993 | Round-Up | 5.13 gal. | Roadside and general weed control including Ailanthus. |
| Surflan AS | 0.58 gal. | Roadside weed (puncture vine) control. | |
| 1994 | Round-Up | 8.74 gal. | Roadside, trail and general weed control. Oak regeneration and ailanthus control. |
| Surflan AS | 3.00 gal. | Roadside and trail weed control (puncture vine). | |
| 1995 | Round-Up | 1.30 gal. | Roadside weed control |
| Surflan AS | 1.30 gal. | Roadside weed control (puncture vine). | |
| 1996 | Round-up Pro | 4.78 gal. | Roadside, trail, oak regeneration and general weed control. |
| Garlon 4 | 9.00 gal. | Himalayan blackberry control. | |
| 1997 | Round-up Pro | 7.69 gal. | Roadside, trail, oak regeneration and general weed control. |
| Garlon 4 | 7.75 gal. | Himalayan blackberry control. | |
| 1998 | Garlon 4 | 40.00 gal. | Himalayan blackberry and bladder pod control using hand wand over approx. 24 acres. |
| 1999 | Garlon 3A | 4.00 gal. | Himalayan blackberry control using back sprayers and hand wand over approx. 10 acres. |
| 2000 | Garlon 4E | 1.50 gal. | Ailanthus bark banding treatment. |
| Rodeo | 1.25 gal. | Arundo donax cut stem treatment. | |
| Round-up Pro | 0.75 gal. | Privet cut stump treatment. | |
| 2001 | Rodeo | 4.03 gal. | Arundo donax cut stem treatment. |
| 2002 | No Use | ||
| 2003 | No Use | ||
| 2004 | Wasp Freeze | 0.09 gal. | Yellow jacket control. |
| Rodeo | 1.64 gal. | Arundo donax cut stem treatment. | |
| Round-up | 0.54 gal. | Privet cut stump treatment, weed control. |